Abstract

Sustainable development means the utilization of resources at a rate less than the rate at which they are renewing. In India infrastructure industry is growing rapidly due to globalization and raising awareness. In the present study, challenges faced by countries like India are to sustain the existing expectations with limited resources available. Reinforced Concrete (RC) structure may suffer several types of defects that may jeopardize their service life. This chapter deals with condition assessment and repair of RCC (G+3) building situated at Northern part of the country. There are various techniques available for repair and rehabilitation of reinforced concrete structures. From a maintenance point of view, it is essential to take up the strength assessment of an existing structure. So, to find out the reason behind the deterioration of the concrete structures some of the NDT and partially destructive technique are used. The NDT tests conducted during this study are Rebound Hammer, Ultra-sonic Pulse Velocity, Concrete resistivity Meter, Ferro-scanning and Carbonation, etc. This chapter helps to explains, how identified the different parameters of distress building like strength, density, level of corrosion and amount of reinforcement. On basis of these results, apply a repair methodology to revert back the strength parameters of the buildings.

Highlights

  • The nondestructive test (NDT) methods are very useful in carrying out the in-situ condition of reinforced concrete (RCC) structures along with parameters causing deterioration of RCC structures [3]

  • Monitoring was carried out through detailed visual inspection along with NDT techniques to assess the deterioration for further planning of repair and rehabilitation

  • A major reason for spalling and corrosion in reinforcing bars is due to inadequate concrete cover

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Summary

Introduction

The major requirements in structures are to resist the deterioration due to aging. The repairing of the structures is very expensive [1]. A case is carried out to access the levels of deterioration in an RCC structure located in northern India. Monitoring was carried out through detailed visual inspection along with NDT techniques to assess the deterioration for further planning of repair and rehabilitation. There is a lot of demand for repair of damaged buildings and rehabilitation of existing concrete structures. NDT techniques such as Rebound Hammer, UPV, Carbonation Test, Rebar Locator Test, and Impact Echo Test from a practical standpoint with an experienced Structural Engineer along with some partial-destructive testing methods are sufficient to access the quality and strength of in-situ concrete [3]. The repair methodology for different structural members, deterioration types of concrete bridges, testing methods are needed.

Nondestructive evaluation
Rebound hammer (Schmidt hammer test)
Ultrasonic pulse velocity (UPV)
Concrete carbonation
Reinforcement scanning test
Concrete resistivity test
Sulfate and chloride ingress test
Results and discussions
Health monitoring of concrete bridges
Findings
Conclusion

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